<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { ref } from 'vue'
import { userRegister, userLogin } from '@/api/user.js'
import { ElMessage } from 'element-plus'  // 添加这行引入
import { useRouter } from 'vue-router'

import { useTokenStore } from '@/stores/token.js'
//控制注册与登录表单的显
// 示， 默认显示注册
const isRegister = ref(false)
//定义数据模型
const registerData = ref({
  username: '',
  password: '',
  rePassword: '',
})
const loginData = ref({
  username: '',
  password: '',
})
// 校验密码的函数
const checkRePassword = (rule, value, callback) => {
  if (value === '') {
    callback(new Error('请再次输入密码'));
  } else if (value !== registerData.value.password) {
    callback(new Error('两次输入密码不一致!'));
  } else {
    callback();
  }
}
//定义表单校验规则
const rules = {
  username: [
    // required  true 表示必填项  message 提示信息 trigger 触发时机  blur 离开表单时触发
    { required: true, message: '请输入用户名', trigger: 'blur' },
    //  min 最小长度 max 最大长度 message 提示信息 trigger 触发时机  blur 离开表单时触发
    { min: 5, max: 16, message: '长度在 5 ~ 16 位非空字符串', trigger: 'blur' }
  ],
  password: [
    { required: true, message: '请输入密码', trigger: 'blur', },
    { min: 5, max: 16, message: '长度在 5 ~ 16 位非空字符串', trigger: 'blur' }
  ],
  rePassword: [
    { validator: checkRePassword, trigger: 'blur' },
  ]
}
// 调用后台接口完成注册
const register = async () => {
  let res = await userRegister(registerData.value);
  ElMessage.success(res.message || '注册成功，请登录!');
}

const router = useRouter()
const tokenStore = useTokenStore();
// 调用后台接口完成登录
const login = async () => {
  let res = await userLogin(loginData.value);
  // 将获取到的token保存到store中
  tokenStore.setToken(res.data)

  //失败被拦截，这边只会执行成功的通知
  ElMessage.success(res.message || '登录成功!');
  //跳转到首页
  router.push('/')
}

const clear = () => {
  registerData.value = {
    username: '',
    password: '',
    rePassword: '',
  }
}
</script>

<template>
  <el-row class="login-page">
    <el-col :span="12" class="bg"></el-col>
    <el-col :span="6" :offset="3" class="form">
      <!-- 注册表单 -->
      <el-form ref="form" size="large" autocomplete="off" v-if="isRegister" :model="registerData" :rules="rules">
        <el-form-item>
          <h1>注册</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerData.password"></el-input>
        </el-form-item>
        <el-form-item prop="rePassword">
          <el-input :prefix-icon="Lock" type="password" placeholder="请再次输入密码"
            v-model="registerData.rePassword"></el-input>
        </el-form-item>
        <!-- 注册按钮 -->
        <el-form-item>
          <el-button class="button" type="primary" auto-insert-space @click="register">
            注册
          </el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = false">
            ← 返回
          </el-link>
        </el-form-item>
      </el-form>
      <!-- 登录表单 -->
      <el-form ref="form" size="large" autocomplete="off" v-else :model="loginData" :rules="rules">
        <el-form-item>
          <h1>登录</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="loginData.username"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码"
            v-model="loginData.password"></el-input>
        </el-form-item>
        <el-form-item class="flex">
          <div class="flex">
            <el-checkbox>记住我</el-checkbox>
            <el-link type="primary" :underline="false">忘记密码？</el-link>
          </div>
        </el-form-item>
        <!-- 登录按钮 -->
        <el-form-item>
          <el-button class="button" type="primary" auto-insert-space @click="login">登录</el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = true">
            注册 →
          </el-link>
        </el-form-item>
      </el-form>
    </el-col>
  </el-row>
</template>

<style lang="scss" scoped>
/* 样式 */
.login-page {
  height: 100vh;
  background-color: #fff;

  .bg {
    background: url('@/assets/logo2.png') no-repeat 60% center / 240px auto,
      url('@/assets/login_bg.jpg') no-repeat center / cover;
    border-radius: 0 20px 20px 0;
  }

  .form {
    display: flex;
    flex-direction: column;
    justify-content: center;
    user-select: none;

    .title {
      margin: 0 auto;
    }

    .button {
      width: 100%;
    }

    .flex {
      width: 100%;
      display: flex;
      justify-content: space-between;
    }
  }
}
</style>